When I tried to post a reply, it said something about “unable to link to that host” and I’m guessing that host was github dot com.
It seems a bit harsh of a rule for this Discourse instance to prevent posting github links (and making the whole thread invisible), because other github projects might be related to Three.js and people might like to share them. At worst, the thread shouldn’t be completely taken off, just the reply not allowed to post.
I’m not sure why it says that 'Multiple community members flagged this post". This was just the automatic spam filter doing its job. Once you have been around for a while it will be less enthusiastic.
Here’s the message I got in my moderator queue:
@fifonik I unflagged the threads so they are now visible.
You were flagged as a spammer for being a new user and posting lots of links to discourse.threejs.org, then you made another comment with a link to the same site so that got blocked too.
And no, it’s not a fail that discourse.threejs.org is watched for by the spam filter. Spammers might just want to fill a forum with noise, and they could post links to any site to do that.
Anyway, stick around for a few more days and the filters won’t be watching you so closely. In the meantime, if anything else gets blocked, just be patient and I’ll unblock it within a couple of hours.